METHODS FOR NON-INVASIVE PRENATAL PLOIDY CALLING
    46.
    发明申请
    METHODS FOR NON-INVASIVE PRENATAL PLOIDY CALLING 审中-公开
    非侵入式预防性呼吸方法

    公开(公告)号:US20150051087A1

    公开(公告)日:2015-02-19

    申请号:US14532666

    申请日:2014-11-04

    Applicant: Natera, Inc.

    Abstract: The present disclosure provides methods for determining the ploidy status of a chromosome in a gestating fetus from genotypic data measured from a mixed sample of DNA comprising DNA from both the mother of the fetus and from the fetus, and optionally from genotypic data from the mother and father. The ploidy state is determined by using a joint distribution model to create a plurality of expected allele distributions for different possible fetal ploidy states given the parental genotypic data, and comparing the expected allelic distributions to the pattern of measured allelic distributions measured in the mixed sample, and choosing the ploidy state whose expected allelic distribution pattern most closely matches the observed allelic distribution pattern. The mixed sample of DNA may be preferentially enriched at a plurality of polymorphic loci in a way that minimizes the allelic bias, for example using massively multiplexed targeted PCR.

    Abstract translation: 本公开提供了从包括来自胎儿母体和胎儿的DNA的DNA的混合样品测量的基因型数据以及任选地来自母体的基因型数据以及任选地从胎儿的基因型数据确定胎儿胎儿的染色体的倍性状态的方法 父亲。 通过使用联合分布模型来确定给定父母基因型数据的不同可能胎儿倍性状态的多个预期等位基因分布,并将预期等位基因分布与混合样品中测量的等位基因分布的模式进行比较来确定倍性状态, 并选择其预期等位基因分布模式与观察到的等位基因分布模式最接近的倍性状态。 DNA的混合样品可以以使等位基因偏倚最小化的方式优先富集在多个多态性位点,例如使用大规模复用的靶向PCR。

    METHODS FOR NON-INVASIVE PRENATAL PLOIDY CALLING
    48.
    发明申请
    METHODS FOR NON-INVASIVE PRENATAL PLOIDY CALLING 有权
    非侵入式预防性呼吸方法

    公开(公告)号:US20140100134A1

    公开(公告)日:2014-04-10

    申请号:US14100928

    申请日:2013-12-09

    Applicant: Natera, Inc.

    Abstract: The present disclosure provides methods for determining the ploidy status of a chromosome in a gestating fetus from genotypic data measured from a sample of DNA from the mother of the fetus and from the fetus, and from genotypic data from the mother and optionally also from the father. The ploidy state is determined by using a joint distribution model to create a set of expected allele distributions for different possible fetal ploidy states given the parental genotypic data, and comparing the expected allelic distributions to the pattern of measured allelic distributions measured in the mixed sample, and choosing the ploidy state whose expected allelic distribution pattern most closely matches the observed allelic distribution pattern. In an embodiment, the mixed sample of DNA may be preferentially enriched at a plurality of polymorphic loci in a way that minimizes the allelic bias.

    Abstract translation: 本公开提供了用于从胎儿母体和胎儿的DNA样品测量的基因型数据以及来自母亲的基因型数据以及任选地还可以从父亲的基因型数据确定胎儿胎儿中染色体的倍性状态的方法 。 通过使用联合分布模型来确定给定父母基因型数据的不同可能胎儿倍性状态的一组预期等位基因分布,并将预期等位基因分布与在混合样品中测量的测量等位基因分布的模式进行比较来确定倍性状态, 并选择其预期等位基因分布模式与观察到的等位基因分布模式最接近的倍性状态。 在一个实施方案中,DNA的混合样品可以以使等位基因偏倚最小化的方式优先富集在多个多态位点。

    METHODS AND COMPOSITIONS FOR REDUCING GENETIC LIBRARY CONTAMINATION
    49.
    发明申请
    METHODS AND COMPOSITIONS FOR REDUCING GENETIC LIBRARY CONTAMINATION 审中-公开
    用于减少遗传性图书馆污染的方法和组合物

    公开(公告)号:US20140051585A1

    公开(公告)日:2014-02-20

    申请号:US13968302

    申请日:2013-08-15

    Applicant: NATERA, INC.

    CPC classification number: B01J19/0046 B01J2219/00722 C12N15/1093

    Abstract: Embodiments include methods, compositions, and kits for creating genetic libraries useful for massively parallel genetic sequencing. Some embodiments are directed to methods of preventing the contamination of genetic libraries with material generated during the formation of other genetic libraries. In some embodiments, the methods employ adapters comprising universal priming sites. The methods can employ non-ligatable primers to generate non-ligatable amplification products so as to prevent unwanted ligation to adapters. In some embodiments, the non-ligatable primers contain uracil. Genetic material can be treated with uracil N glycosylase to prevent the unwanted ligation of uracil containing amplicons to adapters used for creating a second genetic library.

    Abstract translation: 实施方案包括用于产生用于大规模并行遗传测序的遗传图谱的方法,组合物和试剂盒。 一些实施方案涉及防止在形成其他遗传文库期间产生的材料污染遗传文库的方法。 在一些实施方案中,所述方法使用包含通用引发位点的衔接头。 所述方法可以使用不可连接的引物来产生不可连接的扩增产物,以防止对适配器的不必要的连接。 在一些实施方案中,不可连接的引物含有尿嘧啶。 可以用尿嘧啶N糖基化酶处理遗传物质,以防止含有尿嘧啶的扩增子与用于产生第二遗传文库的适配器的不希望的连接。

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